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杂种杨树木葡聚糖内糖基转移酶基因(XET)的生物信息学分析 被引量:1

Bioinformatics Analysis of Populus alba × Populus tremula var. glandulosa Xyloglucan Endotransglycosylase(XET) Gene
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摘要 [目的]通过生物信息学方法对杂种杨树木葡聚糖内糖基转移酶基因的DNA序列、蛋白质序列进行分析预测,为进一步研究奠定基础。[方法]以XET基因及其氨基酸序列为研究对象,利用多种网络数据库及生物信息学软件对其进行分析预测。[结果]该基因编码290个氨基酸残基,相对分子质量33 672.0 D,理论等电点(p I)7.04;该酶可能存在3个卷曲结构部位、1个信号肽剪切位点和1个跨膜区,是典型的分泌蛋白;三级结构同源建模预测结果较好,二级结构预测中的螺旋、卷曲和折叠均可见。相似性比对和进化分析显示其与葡萄等的序列相似度较高;而蛋白质三级结构的预测则发现,该酶与几种杆菌的蛋白较接近。[结论]XET基因可能在很多生物中具有较高的保守性。 [Objective] Analyze and predict the structure and feature of Populus alba × Populus tremula var.glandulosa xyloglucan endotransglycosylase (XET) gene/protein sequence through bioinformatics method,and pave the way for the downstream experiments.[Method] Utilize various online databases and bioinformatics software to predict XET gene and its corresponding protein.[Result] XET gene encodes 290 aa; protein molecular weight is 33 672.0 D,theoretical isoelectric point is 7.04 ; XET contains 3 coiled coils,1 signal peptide and 1 transmembrane domain indicating that it is a typical secretory protein; prediction of secondary structure and homologous modeling of tertiary structure both returned rational results.[Conclusion] It is possible that XET gene possesses high conservation in different species.
出处 《安徽农业科学》 CAS 2014年第34期12132-12136,共5页 Journal of Anhui Agricultural Sciences
基金 "863"项目(2013AA102701)
关键词 杨树 木葡聚糖内糖基转移酶 生物信息学 Populus alba × Populus tremula var. glandulosa Xyloglucan endotransglycosylase Bioinformatics
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